Compound regenerative coke oven



May l, 1934. F, TQTZEK 1,957,425

COMPOUND REGENERATIVE COKE OVEN Filed Sept. 24, 1930 4 Sheets-Shee 1 May l, 1934. F TOTZEK 1,957,425

COMPOUND REGENERATIVE COKE OVEN Filed Sept. 24. 1930 4 Sheets-Sheet 2 May l, 1934. F, TQTZEK 1,957,425

COMPOUND REGENERATIVE COKE OVEN Filed Sept. 24, 1930 4 Sheets-Sheet 5 v Q Q wa Q .9 Q x a u w Q Q k N Q I, N Q

Syvum/vbo@ mkg-a w IW "M May 1, 1934. F. TOTZEK coMPouND REGENERATIVE COKE ovEN Filed Sept. 24. 1930 4 Sheets-Sheet 4 Patented May 1, 1934 ETD STATES PAT T CFFICE COMPOUND REGENERATIVE COKE OVEN Application September 24, 1930,

In Germany September 27, 1929 Serial No.

11 Claims. (Cl. 202-144) with the corresponding hairpin flues of the half This invention relates to improvements in coke ovens particularly of the type known as the Koppers oven.

Compound regenerative coke ovens with draft 5 direction changers and hairpin or inverted U heating flues are well known. Such ovens include regenerators arranged under the base of the retort chambers extending longitudinally with respect thereto, and a transverse central partition wall dividing the oven in half in such mannerthat all of the regenerators under one half of the oven preheat gas and air While the regenerators under the other half are being traversed by the Waste heat. It has furthermore a1- ready been proposed to directly connect the regenerators on one side of the partition wall with the flues immediately thereabove and with the flues above the other side of the partition wall by means of base or bottom flues.

The present invention relates to a special form of this oven system wherein, in particular, the scissors-like crossing of base flues which extend from regenerators whose ends abut against one another is replaced by base iues which extend, not from every regenerator but from every other regenerator. This is accomplished by dividing every even number regenerator in one half of the oven and every odd regenerator in the other half of the oven into two sections by means of a partition wall extending centrally in the direction of the chamber, and by connecting only the undivided regenerators with the base ues on the other half of the oven.

With the above arrangement in one half of the oven every even .number undivided regenerator serves to preheat the gasand every odd number undivided regenerator serves to preheat the air. The half of each subdivided regenerator lying next to each even number undivided regenerator supplies air while the other half of the subdivided regenerator lying next to each `odd number regenerator supplies gas. While the above mentioned portion oi the oven is serving as stated, all the regenerators in the other half of the oven are storing up waste heat developed by the burning of the preheated gas and air in the hairpin flues.

Every undivided regenerator is connected with hairpin flues on both sides of the central wall. The communication with the flues thereabove is direct whereas the communication with the lues Vabove the other half is through the base flues which in turn have branches situated in the hearth leading to the hairpin lues o-n each side.

, The subdivided regenerators are connected only of the oven lying directly above the same.

Other features of novelty will be apparent from the following specication when read in connection with the accompanying drawings in which one embodiment is illustrated by Way oi example.

In the drawings:

Figure l is a vertical cross section of a portion of the oven taken on line 1-1 of Fig. 2;

Figure 2 is a vertical longitudinal section of the whole oven taken on line 2-2 of Fig. 1;

Figure 3 is a horizontal section taken on line 3-3 of Fig. 1;

Figure 4 is a vertical section on the line 4 4 of Figure 2; and

Figure 5 is a horizontal section taken substantially on the line 5-5 of Figure 4.

Referring to the drawings in detail, the oven comprises a structure providing retort chambers 10, hairpin or inverted U flues 11 and regenerators 13, 14 and l5. The regenerators 13 and 14 separated by walls 16 are herein referred to as subdivided regenerators, and the regenerators l5 as undivided regenerators. The regenerators extend only half the length of the oven to a transverse partition wall 17. The undivided regenerators l5 and the subdivided regeneratorslS, 14 are alternately arranged in the oven as shown in Fig. 1. The undivided regenerators on one side of the wall lie opposite the subdivided regenerators on the other half of the oven, as shown in Figure 3.

The ports or passages 18 serve to introduce air or gas in one cycle of operation and as outlets for waste gases in the other cycles.

The regenerators 13 and 14 communicate only with the flues ll almost directly above through the passages 19 and 20. The undivided regenerators communicate both with the lues 11 almost directly above through passages 2l and 22 and also with the flues 11 above the other side oi the wall 17 through base flues 23. The base flues have branches 25 and 26 leading to the right and to the left each branch communicating with two hairpin ues 1l by means of branches 27 and 28.

To illustrate the operation of the oven, Fig. l has been marked to illustrate the cycle in which the gas and air are introduced, G denoting the presence of gas, and A, the presence of air. These regenerators have been preheated in the previous cycle and are herein referred to as the preheating half of the oven whereas the other end is referred to as the heat storing half.

ii il Gas is introduced into the preheating half through inlets 18 into regenerators 14 G and 15 G from whence is passes through passages 20 and 22, respectively, to hairpin nues 11 thereabove. Air is introduced into regenerator i5 A and 13 A and passes through passages 21 and 19, respectively, to iiues thereabove where combustion occurs. The gases of combustion pass over the walls 24 of the hairpin flues and out through branch flues 27 and 28 to branch flues 25 to base fiues 23 to regenerators 15 in the heat storing half where residual heat is given up prior to its exit through 18 from the oven.

A portion of the air from regenerator 15 A passes into base flue 23 of the heat storing half and from there flows into branches 25, to passages 27 and 28 into hairpin ues 11 in that half. A portion of the gas from regenerator 15 G passes into base nue 23 of the heat storing half into branch passages 25 to 27, and to 28 into flues 1l where combustion with the introduced air occurs. These combustion gases pass over the walls 24 and downwardly through passages 19, 20, 21 and 22 into regenerators 13, 14 and 15 and out through passages 18 all in the heat storing half of the oven.

From the above description it can be readily seen that the resistance to ow of gases is uniform throughout the oven, sin-ce all the gases pass through the same number of channels,though the arrangement is such that half of the gases pass through the base i'iues first and the remaining gases pass through the base nues, last.

Having thus described the invention, what is claimed as new and desired to be secured by Letters Patent is:

1. In a battery of regenerative coke ovens comprising a series of alternate horizontal coking chambers and heating walls therefor arranged side-by-side in a row, each of said heating walls including a row of hairpin combustion iiues; two parallel rows of regenerators below the'coking chambers and heating walls, each of the rows or regenerators extending along the battery and each of said heating walls extending across the two rows of regenerators with part or the row of hairpin lues in each heating wall above each of the rows of regenerators, a central partition wall separating said two rows of regenerators centrally of the heating walls; the improvement comprising the provision in each row of regenerators of regenerators of two different widths, alternate wide regenerators and intermediate narrow regenerators with two narrow regenerators adjacent to each other and intermediate each two consecutive wide regenerators, and with each two narrow regenerators that are adjacent to each other in each of the two parallel rows of regenerators opposite a wide regenerator in the other row, base lues on each side of said central partition wall between the level of the tops of the narrow regenerators and the level of the bottoms or" the coliing chambers and heating walls and communicably connecting the wide regenerators on the other side of the said partition wall with the hairpin flues in the portions oi the battery above the base iiues, and each of said na frow regenerators being communicably connected only to hairpin flues on the same side of said central partition wall as the 2. A regenerative Coke oven battery according to claim 1 wherein each or the hase iiues is communicatively connected to hairpin lues or each ci four oi the heating walls.

3. In aV battery of regenerative coke ovens comprising a series of alternate horizontal coking chambers and heating walls therefor arranged side-by-side in a row, each oi said heating walls including a row of hairpin combustion nues; two parallel rows of regenerators below the coking chambers and heating walls, each of the rows of regenerators extending Valong the battery and each of said heating walls extending across the two rows of regenerators with part of the row of hair pin nues in each heating wall above each of the rows ci regenerators, a central partition wall separating said two rows of regenerators centrally of the heating walls the improvement comprising the provision in each row of regenerators of regenerators of two different widths, alternate wide regenerators and intermediate narrow regenerators with two narrow' regenerators adjacent to each other and intermediate each two consecutive wide regenerators, and with each two narrow regenerators that are adjacent to each other in each of the two parallel rows of regenerators opposite a wide regenerator in the other row, base nues on each side of said central partition wall between the level of the tops of the narrow regenerators and the level of the bottoms of the coking chambers and heating walls and communicably connecting the wide regenerators on the other side of the said partition Wall with the hairpin ues in the portions of the battery above the base ues, ducts communicably connecting each of the wide regenerators with hairpin flues in the portion of at least one of the heating walls on the same side of the central partition wall as the wide regenerator, and each of said narrow regenerators being communicably connected only to hairpin flues on the same side' of said central partition wall as the narrow regenerator. v

4. A regenerative coke oven battery according to claim 3 in which the communicable connections of the wide regenerators and the' communieating connections of one of the narrow regenerators terminate in the same limb of at least one of the hairpin flues whereby one of said connections may supply gas and the other, air.

5. A regenerative coke oven battery according to claim 3 in which passages are provided where'- by each base flue is connected to hairpin ues Vof each of four of the heating walls.

6. A regenerative coke oven battery as claimed in claim 3 and in winch the two rows of regenerators are operable in alternation with each other for concurrent inflow preheating of combustion media and outflow of waste gas, and in which every other wide regenerator in each of said two rows is for gas and the others of the wide regenerators in each of the two rows are for air.

7. A regenerative coke oven battery as claimed in claim 3 and in which the two rows of regenerators are operable in alternation with each other for concurrent inflow preheating of combustion media and outiiow of waste gas, and in which every other wide regenerator in each of said two rows is for gas and the others of the wide regenerators in each of the two rows are for air, and in which in each row of regenerators the two narrow regenerators between each two wide regenerators are for gas and air with the narrow regenerator for gas next to a wide air regenerator and the narrow regenerator for air next to the wide gas regenerator so as to flank each wide gas regenerator with narrow air regenerators and to ank each wide air regenerator wtih narrow gas regenerators.

"lio

8. In a coke oven battery of the type comprising a series of alternate horizontal coking chambers and heating walls therefor arranged side by side in a row, each of said heating walls including a row of hairpin combustion flues, the combination with two rows of regenerators below the coking chambers and heating walls, each of the rows of regenerators extending along the battery, a first group of regenerators in each row communicating with the hairpin combustion flues located thereover, of base ues for conducting gases from the hairpin combustion flues located over each row of regenerators to a second group of regenerators in the other row, and communicating passages between the second group of regenerators in each row and the hairpin combustion flues thereover.

9. In a coke oven battery of the type comprising a series of alternate horizontal coking chambers and heating walls therefor arranged side by side in a row, each of said heating walls including a row of hairpin combustion ues, the combination with two rows of regenerators below the coking chambers and heating walls, each of the rows of regenerators extending along the battery, the regenerators in each row being allocated to a rst group and a second group, regenerators in the second group in each row being arranged in spaced relation with regenerators in the rst group located therebetween, the regenerators in the first group communicating with hairpin combustion ues located thereover only, of base ilues for conducting gases from the hairpin combustion flues located over each row of regenerators to regenerators in the second group of the other row, and communicating passages between the second group of regenerators in each row and the hairpin combustion lues thereover.

10. The combination recited in claim 9 in which the regenerators in the first group in each row are located opposite the regenerators in the second group in the other row.

1l. The combination recited in claim 9 in which two regenerators in the rst group in each row are contiguous to each other and located between two regenerators in the second group in the same row, the two regenerators in the second group being contiguous to the two regenerators in the irst group respectively.

FRIEDRICH TOTZEK. 

